[callc]

Somewhere in the middle IMO. If the domain name is desirable it looks more like a building, because people generally care about who owns the land when it is not getting put to good use.

Websites are more like books when they have a domain no else else cares about.

[idle_zealot]

So, maybe require official ID/address/contact info for any domain over a certain price? Or for all domains under a certain character count, maybe, which could vary for TLD.

[CydeWeys]

How do you determine the value of a domain name? Also there's nothing particularly valuable for most short domain name strings except on .com. It's generic words that tend to be valuable, not a short random string.